Hot answers tagged live-cd
The current iso image is ddable and the images have been ddable for quite some time now as far as I know. sudo dd if=./ubuntu.iso of=/dev/sdx bs=16M Where ./ubuntu.iso is the path to the actual file and /dev/sdx is the target USB drive. Alternatively, you can use cat instead of dd which is arguably faster like so: sudo -i cat ./ubuntu.iso > /dev/sdx ...
There is no such thing as try(without install) option for server editions. Please refer to a similar question which was asked previously. Should a 14.04 server iso operate as a live CD?
Answering the question Since you ask on AskUbuntu, here's an answer to what you're asking for. "boot without changing anything on the HD" The regular (not the alternate or server) ISOs of major flavors of Ubuntu, whether 32-bit or 64-bit, can all boot live on a machine to test drive without installing. I personally booted Ubuntu, Xubuntu, Lubuntu from ...
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